For a transthoracic echocardiogram (TTE), the imaging is performed with a handheld transducer placed directly on the chest wall. This chapter provides an overview of the basic concepts of these cardiac imaging modalities as well as the clinical indications for each procedure.ĢD echocardiography uses the principle of ultrasound reflection off cardiac structures to produce images of the heart ( Table 12-1). Detection of coronary calcification by CT as well as direct visualization of coronary arteries by CT angiography (CTA) may be useful in selected patients with suspected coronary artery disease (CAD). Gadolinium enhancement during cardiac MRI adds information on myocardial perfusion. They are particularly useful in the examination of cardiac masses, the pericardium, the great vessels, and ventricular function and perfusion. Cardiac MRI and CT can delineate cardiac structure and function with high resolution. Nuclear cardiology uses radioactive tracers to provide assessment of myocardial per-fusion and metabolism, along with ventricular function, and is applied primarily to the evaluation of patients with ischemic heart disease. Transesophageal echocardiography (TEE) provides a unique window for high-resolution imaging of posterior structures of the heart, particularly the left atrium, mitral valve, and aorta. Doppler echocardiography measures the velocity of moving red blood cells and has become a noninvasive alternative to cardiac catheterization for assessment of hemodynamics. Two-dimensional (2D) echocardiography is able to visualize the heart directly in real time using ultrasound, providing instantaneous assessment of the myocardium, cardiac chambers, valves, pericardium, and great vessels. Nishimura Panithaya Chareonthaitawee Matthew MartinezĬardiovascular imaging plays an essential role in the practice of cardiology.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |